def student_info(name,age,gender='男'):
    print(f'姓名是{name}年龄是{age}性别是{gender}')

student_info(name='张三',age=20,gender='男')
student_info(name='李四',age=19,gender='男')
student_info(name='王五',age=20,gender='男')

print('****'*5)
student_info(name='君乐',age=100)
student_info(name='孙军乐',age=100)
student_info(name='乐乐',age=100)
print('#'*50)

student_info(name='小姐姐',age=20,gender='小妮子')